3 files changed, 11 insertions, 11 deletions
diff --git a/src/libstd/sys_common/backtrace.rs b/src/libstd/sys_common/backtrace.rs
index 8f78c2e6f59..9f0214f5f05 100644
--- a/src/libstd/sys_common/backtrace.rs
+++ b/src/libstd/sys_common/backtrace.rs
@@ -14,7 +14,6 @@
 use env;
 use io::prelude::*;
 use io;
-use libc;
 use str;
 use sync::atomic::{self, Ordering};
 use path::{self, Path};
@@ -39,9 +38,9 @@ pub const HEX_WIDTH: usize = 10;
 #[derive(Debug, Copy, Clone)]
 pub struct Frame {
     /// Exact address of the call that failed.
-    pub exact_position: *const libc::c_void,
+    pub exact_position: *const u8,
     /// Address of the enclosing function.
-    pub symbol_addr: *const libc::c_void,
+    pub symbol_addr: *const u8,
 }
 
 /// Max number of frames to print.
@@ -201,8 +200,10 @@ fn output(w: &mut Write, idx: usize, frame: Frame,
 ///
 /// See also `output`.
 #[allow(dead_code)]
-fn output_fileline(w: &mut Write, file: &[u8], line: libc::c_int,
-                       format: PrintFormat) -> io::Result<()> {
+fn output_fileline(w: &mut Write,
+                   file: &[u8],
+                   line: u32,
+                   format: PrintFormat) -> io::Result<()> {
     // prior line: "  ##: {:2$} - func"
     w.write_all(b"")?;
     match format {
diff --git a/src/libstd/sys_common/gnu/libbacktrace.rs b/src/libstd/sys_common/gnu/libbacktrace.rs
index 016c840d154..75c6bd5d2a2 100644
--- a/src/libstd/sys_common/gnu/libbacktrace.rs
+++ b/src/libstd/sys_common/gnu/libbacktrace.rs
@@ -20,13 +20,13 @@ use sys_common::backtrace::Frame;
 pub fn foreach_symbol_fileline<F>(frame: Frame,
                                   mut f: F,
                                   _: &BacktraceContext) -> io::Result<bool>
-where F: FnMut(&[u8], libc::c_int) -> io::Result<()>
+where F: FnMut(&[u8], u32) -> io::Result<()>
 {
     // pcinfo may return an arbitrary number of file:line pairs,
     // in the order of stack trace (i.e. inlined calls first).
     // in order to avoid allocation, we stack-allocate a fixed size of entries.
     const FILELINE_SIZE: usize = 32;
-    let mut fileline_buf = [(ptr::null(), -1); FILELINE_SIZE];
+    let mut fileline_buf = [(ptr::null(), !0); FILELINE_SIZE];
     let ret;
     let fileline_count = {
         let state = unsafe { init_state() };
@@ -136,7 +136,7 @@ extern {
 // helper callbacks
 ////////////////////////////////////////////////////////////////////////
 
-type FileLine = (*const libc::c_char, libc::c_int);
+type FileLine = (*const libc::c_char, u32);
 
 extern fn error_cb(_data: *mut libc::c_void, _msg: *const libc::c_char,
                    _errnum: libc::c_int) {
@@ -162,7 +162,7 @@ extern fn pcinfo_cb(data: *mut libc::c_void,
         // if the buffer is not full, add file:line to the buffer
         // and adjust the buffer for next possible calls to pcinfo_cb.
         if !buffer.is_empty() {
-            buffer[0] = (filename, lineno);
+            buffer[0] = (filename, lineno as u32);
             unsafe { ptr::write(slot, &mut buffer[1..]); }
         }
     }
diff --git a/src/libstd/sys_common/thread.rs b/src/libstd/sys_common/thread.rs
index 87fb34a9dec..c19424f2952 100644
--- a/src/libstd/sys_common/thread.rs
+++ b/src/libstd/sys_common/thread.rs
@@ -10,12 +10,11 @@
 
 use env;
 use alloc::boxed::FnBox;
-use libc;
 use sync::atomic::{self, Ordering};
 use sys::stack_overflow;
 use sys::thread as imp;
 
-pub unsafe fn start_thread(main: *mut libc::c_void) {
+pub unsafe fn start_thread(main: *mut u8) {
     // Next, set up our stack overflow handler which may get triggered if we run
     // out of stack.
     let _handler = stack_overflow::Handler::new();